Combination seat pad

ABSTRACT

A seat pad has a circular central pad element and at least one annular pad element. The circular central pad element is inflatable. The at least one annular pad element is inflatable and is mounted concentrically around the central pad element. At least one set of an annular combination recess and an annular combination protrusion is formed between the central pad element and the at least one annular pad element to connect the central pad element and the at least one annular pad element with each other. The combination recess has at least one engaging rib formed on an inner surface of the combination recess. The combination protrusion has at least one engaging recess formed in an outer surface of the combination protrusion and engaged respectively with the at least one engaging rib of the combination recess.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a seat pad, and more particularly to acombination seat pad that is composed of a circular element and at leastone annular element.

2. Description of Related Art

With reference to FIG. 7, a conventional inflatable seat pad comprises acircular pad body 50. The pad body 50 has multiple protuberances 52formed on a top surface of the pad body 50. A grip hole 54 is definedthrough the pad body 50 at a position adjacent to a periphery of the padbody 50 to allow a user to grip or to move the pad body 50 conveniently.

However, the conventional pad body 50 is formed as a single piece, sothe conventional seat pad has only one color. Therefore, the appearanceof the conventional seat pad is not aesthetically attractive. Inaddition, to store or transport the conventional pad body takes a largespace and is not convenient.

To overcome the shortcomings, the present invention tends to provide aseat pad to mitigate or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the invention is to provide a seat pad that iscomposed of multiple concentric elements.

The seat pad has a circular central pad element and at least one annularpad element. The circular central pad element is inflatable. The atleast one annular pad element is inflatable and is mountedconcentrically around the central pad element. At least one set of anannular combination recess and an annular combination protrusion isformed between the central pad element and the at least one annular padelement to connect the central pad element and the at least one annularpad element with each other. The combination recess of each one of theat least one set has at least one engaging rib formed on an innersurface of the combination recess. The combination protrusion of eachone of the at least one set has at least one engaging recess formed inan outer surface of the combination protrusion and engaged respectivelywith the at least one engaging rib of the combination recess.

Other objects, advantages and novel features of the invention willbecome more apparent from the following detailed description when takenin conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a first embodiment of a seat pad inaccordance with the present invention;

FIG. 2 is an exploded perspective view in partial section of the seatpad in FIG. 1;

FIG. 3 is a cross sectional side view of the seat pad in FIG. 1;

FIG. 4 is an exploded perspective view in partial section of a secondembodiment of a seat pad in accordance with the present invention;

FIG. 5 is a perspective view of a third embodiment of a seat pad inaccordance with the present invention;

FIG. 6 is an operational perspective view of the seat pad in FIG. 6showing that multiple seat pads are mounted around a rod; and

FIG. 7 is a perspective view of a conventional seat pad.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

With reference to FIGS. 1 to 3, a seat pad in accordance with thepresent invention comprises a circular central pad element 10 and atleast one annular pad element 20. The central pad element 10 isinflatable and may have a nozzle 102. The at least one annular padelement 20 is mounted concentrically around the central pad element 10.Each annular pad element 20 is inflatable and may have a nozzle 202. Inthe first embodiment, the at least one annular pad element 20 isimplemented as one in amount. The annular pad element 20 is mountedaround the circular central pad element 10. A combination recess 12 isdefined around an outer periphery of the central pad element 10. Thecombination recess 12 may be concave in cross sectional shape. Theannular pad element 20 has an annular combination protrusion 22 formedon and protruding from an inner periphery of the annular pad element 20to engage with the combination recess 12 in the central pad element 10.The combination protrusion 22 may be convex in cross sectional shape.With the engagement of the combination recess 12 and the combinationprotrusion 22, the central pad element 10 is securely combined with theannular pad element 20. In addition, two engaging ribs 14 are formedrespectively on a top side and a bottom side of an inner surface of thecombination recess 12. Two engaging recesses 24 are formed respectivelyin a top side and a bottom side of an outer surface of the combinationprotrusion 22 and are engaged respectively with the engaging ribs 14 inthe combination recess 12. With the engagement between the engaging ribs14 and the engaging recesses 24, the combination between the central padelement 10 and the annular pad element 20 is enhanced.

With such an arrangement, as the seat pad in accordance with the presentinvention is composed of a central pad element 10 and at least oneannular pad element 20, the pad elements 10,20 can be manufactured indifferent colors or the central pad element 10 in a color can beselectively combined with different annular pad elements 20 in differentcolors. Accordingly, the appearance of the seat pad is aestheticallyattractive. In addition, because the annular pad element 20 isdetachable from the central pad element 10, the space for storing ortransporting the seat pad can be reduced.

With reference to FIG. 4, in the second embodiment, two annular padelements 20,20A are implemented and include an innermost annular padelement 20A and an outermost annular pad element 20. The innermostannular pad element 20A is combined with and mounted around the centralpad element 10A, and the outermost annular pad element 20 is combinedwith and mounted around the innermost annular pad element 20A. Acombination recess 12A and a combination protrusion 22A are formedrespectively on the outer periphery of the central pad element 10A andthe innermost periphery of the innermost annular pad element 20A tocombine the innermost annular pad element 20A with the central padelement 10A. A combination recess 26A and a combination protrusion 22are formed respectively on the outer periphery of the innermost annularpad element 20A and the outer periphery of the outermost annular padelement 20 to combine the outermost annular pad element 20 with theinnermost annular pad element 20A. Accordingly, a round seat pad isformed by the central pad element 10A and the annular pad elements20,20A.

With reference to FIGS. 1 to 5, a curved grip hole 28 is defined throughthe outermost annular pad element 20 to allow a user to grip or to movethe seat pad conveniently. In addition, the thickness of the outermostannular pad element 20 is gradually decreased from the inner peripheryto the outer periphery. Furthermore, each of the central pad element10,10A and the annular pad elements 20,20A has multiple protuberances104,204 formed on the top surface of the pad element 10,10A,20,20A. Theprotuberances 104,204 can provide a massaging effect to a user who sitson the seat pad. Alternatively, the positions of the combination recess12A,26A and the combination protrusion 22,22A can be changed. This meansthat the combination protrusion is formed on the outer periphery of thecentral pad element 10,10A or the annular pad element 20,20A, and thecombination recess is formed in the inner periphery of the annular padelement 20,20A.

With reference to FIGS. 5 and 6, in the third embodiment, the centralpad 10B element may have a rod hole 106 defined through the center ofthe central pad element 10B. With the rod hole 106, multiple seat padscan be mounted around a rod and are stacked with each other.Accordingly, the space for storing the seat pads can be effectivelyreduced.

Even though numerous characteristics and advantages of the presentinvention have been set forth in the foregoing description, togetherwith details of the structure and function of the invention, thedisclosure is illustrative only, and changes may be made in detail,especially in matters of shape, size, and arrangement of parts withinthe principles of the invention to the full extent indicated by thebroad general meaning of the terms in which the appended claims areexpressed.

What is claimed is:
 1. A seat pad comprising: a circular central padelement being inflatable; at least one annular pad element beinginflatable and mounted concentrically around the central pad element;and at least one set of an annular combination recess and an annularcombination protrusion formed between the central pad element and the atleast one annular pad element to connect the central pad element and theat least one annular pad element with each other, wherein thecombination recess of each one of the at least one set has at least oneengaging rib formed on an inner surface of the combination recess; andthe combination protrusion of each one of the at least one set has atleast one engaging recess formed in an outer surface of the combinationprotrusion and engaged respectively with the at least one engaging ribof a corresponding combination recess.
 2. The seat pad as claimed inclaim 1, wherein the at least one annular pad element is implemented asone in amount; and one set of an annular combination recess and anannular combination protrusion is formed between the central pad elementand the annular pad element.
 3. The seat pad as claimed in claim 2,wherein the combination recess is concave in cross sectional shape; andthe combination protrusion is convex in cross sectional shape.
 4. Theseat pad as claimed in claim 3, wherein each one of the central padelement and the annular pad element has multiple protuberances formed onand protruding from a top surface of the pad element.
 5. The seat pad asclaimed in claim 4, wherein the annular pad element has a grip holedefined through the alar pad element.
 6. The seat pad as claimed inclaim 5, wherein the central pad element further has a rod hole definedthrough the central pad element.
 7. The seat pad as claimed in claim 1,wherein the at least one annular pad element is implemented as multiplein amount; and multiple sets of an annular combination recess and anannular combination protrusion are formed between the central padelement and the multiple annular pad elements.
 8. The seat pad asclaimed in claim 7, wherein each combination recess is concave in crosssectional shape; and each combination protrusion is convex in crosssectional shape.
 9. The seat pad as claimed in claim 8, wherein each oneof the central pad element and the multiple annular pad elements hasmultiple protuberances formed on and protruding from a top surface ofthe pad element.
 10. The seat pad as claimed in claim 9, wherein themultiple annular pad elements include an outermost annular pad element;and the outermost annular pad element has a grip hole defined throughthe outermost annular pad element.
 11. The seat pad as claimed in claim10, wherein the central pad element further has a rod hole definedthrough the central pad element.
 12. The seat pad as claimed in claim 1,wherein the combination recess of each one of the at least one set isconcave in cross sectional shape; and the combination protrusion of eachone of the at least one set is convex in cross sectional shape.
 13. Theseat pad as claimed in claim 1, wherein each one of the central padelement and the at least one annular pad element has multipleprotuberances formed on and protruding from a top surface of the padelement.
 14. The seat pad as claimed in claim 1, wherein the at leastone annular pad element includes an outermost annular pad element; andthe outermost annular pad element has a grip hole defined through theoutermost annular pad element.
 15. The seat pad as claimed in claim 1,wherein the central pad element further has a rod hole defined throughthe central pad element.